View source for L-MT-14-051, Submittal of Core Operating Limits Report (NAD-MN-035, Rev. 0) for Cycle 27

{{Adams
| number = ML14205A492
| issue date = 07/23/2014
| title = Submittal of Core Operating Limits Report (NAD-MN-035, Rev. 0) for Cycle 27
| author name = Fili K D
| author affiliation = Northern States Power Co, Xcel Energy
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000263
| license number = DPR-022
| contact person = 
| case reference number = L-MT-14-051
| document type = Fuel Cycle Reload Report, Letter type:L
| page count = 52
}}

=Text=
{{#Wiki_filter:Xcel Energy@ July 23, 2014 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Monticello Nuclear Generating Plant 2807 W County Road 75 Monticello, MN 55362 L-MT-14-051 Technical Specification 5.6.3 Renewed Facility Operating License No. DPR-22 Submittal of Core Operating Limits Report (NAD-MN-035, Revision 0) for Cycle 27 Northern States Power Company-Minnesota (NSPM), a Minnesota corporation, doing business as Xcel Energy, is providing in accordance with Technical Specification (TS) 5.6.3, "Core Operating Limits Report (COLR)," a revised COLR incorporating the Maximum Extended Load Line Limit Analysis-Plus (MELLLA+)
for the Monticello Nuclear Generating Plant (MNGP). The COLR provides the cycle-specific values of the limits established using U.S. Nuclear Regulatory Commission (NRC) approved methodologies such that the applicable limits of the plant safety analysis are met. The current COLR for Extended Power Up rate operation has been updated to reflect the limits for the MELLLA+ operating region. Summary of Commitments This letter proposes no new commitments and does not revise any existing commitments.
Should you have questions regarding this letter, please contact Mr. Richard Loeffler at (763) 295-1247.
Kare -D. Fili Site Vice President, Monticello Nuclear Generating Plant Northern States Power Company-Minnesota Enclosure cc: Administrator, Region Ill, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC Minnesota Department of Commerce ENCLOSURE MONTICELLO NUCLEAR GENERATING PLANT CYCLE 27 WITH EXTENDED POWER UPRATE AND MAXIMUM EXTENDED LOAD LINE LIMIT PLUS NAD-MN-035 REVISION 0 (50 pages follow)
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Monticello Nuclear Generating Plant
* Cycle 27 with Extended Power Uprate and Maximum Extended Load line limit Plus Core Operating limits Report NAD-MN-035 Revision 0 Prepared By: Date: Kenneth Smolinske Senior Engineer, Nuclear Analysis and Design Verified By; Azf/L Date; 1-.:?/-2.-DIY Bill Lax Principal Engineer, Nuclear Analysis and Design Reviewed By: Date: 2/ Lj /2-D H. L. Hoelscher Date: L/2/ Lo IL( I I Approved By: Supervisor, Nuclear Analysis and Design NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 1 of 50 1.0 Core Operating Limits Report (COLR) This Core Operating Limits Report for Monticello Nuclear Generating Plant (MNGP) Cycle 27 at the Extended Power Uprate (EPU) of 2004 MWt with Maximum Extended Load Line Limit Plus (MELLLA+)
is prepared in accordance with the requirements of Technical Specification 5.6.3. The core operating limits are developed using NRC approved methodology (References 1, 3, and 11 ), and are established such that all applicable thermal limits of the plant safety analysis are met. The SLMCPR of 1.15 was used for two-loop operation for all fuel types in Cycle 27. The SLMCPR for single loop operation is 1.15. These values are consistent with the values specified in Reference
: 2. This report includes the Detect and Suppress Solution -Confirmation Density (DSS-CD) stability solution, which is required to operate in the MELLLA+ region of the Power-flow map. This report includes using TRACG04 for the transient analyses.
The implementation of TRACG for transient analyses at MNGP is documented in Reference
: 6. 2.0 References 1.0 General Electric Standard Application for Reactor Fuel (GESTAR-11}, NEDE-24011-P-A-19, May 2012. 2.0 Supplemental Reload Licensing Report for Monticello Reload 26 Cycle 27 Extended Power Uprate (EPU) and Maximum Extended Load Line Limit Plus (MELLLA+), OOOON0154-SRLR, Revision 5, December 2013. 3.0 General Electric Licensing Topical Report ODYSY Application for Stability Licensing Calculations, NEDC-32992-P-A, DRF AI3-00426-00, July 2001. 4.0 Not used. 5.0 Fuel Bundle Information Report for Monticello, Reload 26, Cycle 27, 0000-0146-5423-FBIR, Revision 1, January 2013. (EPU Report) 6.0 Monticello TRACG Implementation for Reload Licensing Transient Analysis, Hitachi Nuclear Energy, 0000-0082-0062-R1, May 2010. 7.0 Not used. 8.0 Monticello Option B Licensing Basis, LRC03.040, March 24, 2003 from L. R. Conner [GNF] to Rick Rohrer [NMC] (NAD letter number: IC.MN.2003.010).
9.0 Not used. 10.0 Not used. 11.0 General Electric Boiling Water Reactor Detect and Suppress Confirmation Density, NEDC-33075P-A, Revision 6, January 2008. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 2 of 50 12.0 Safety Analysis Report for Monticello Maximum Extended Load Line Limit Analysis Plus, NEDC-33435P, Revision 1, December 2009. 13.0 Instrument Limits Calculation, Northern States Power-Minnesota (NSPM), Monticello Nuclear Generating Plant, Average Power Range Monitor NUMAC PRNM Setpoints-MELLLA+ Automatic Backup Stability Protection (ABSP), 0000-0105-4810-R2 MNGP-M+ABSP-APRM-Calc-2009-P, Revision 2, June 2011 (Monticello calculation 12-043 in EC20405).
14.0 Project Task Report Northern States Power-Minnesota (NSPM) Monticello Nuclear Generating Plant MELLLA+ Task T0201: Power/Flow Map, 0000-0085-0077-TR-RO, October 2008 (Monticello calculation 13-082 in EC15113).
15.0 Not used. 16.0 Calculation CA-08-051, Rev 0, Instrument Setpoint Calculation-Rod Block Monitor (RBM) PRNM Setpoints for CL TP and EPU Operation.
17.0 GE BWR Licensing Report, Average Power Range Monitor, Rod Block Monitor, and Technical Specification Improvement (ARTS) Program for Monticello Nuclear Generation Plant, NEDC-30492-P, Section 4, April 1984. 18.0 GE Services Information Letter, Backup Pressure Regulator, GE SIL No. 614 Revision 1, March 15, 1999. 19.0 Monticello Nuclear Generating Plant Offrated Limits and Pressure Regulator Downscale Failure Analysis at MELLLA+, GE Hitachi Nuclear Energy, 0000-0131-4356-R 1, Revision 1, January 2012. 20.0 Letter from PeterS. Tam (USNRC) to Timothy J. O'Connor (Northern States Power Company), "Monticello Nuclear Generating Plant (MNGP)-Issuance Of Amendment Regarding The Power Range Neutron Monitoring System (TAC No. MD8064)," dated January 30, 2009. 21.0 Fuel Bundle Information Report for Monticello Reload 25 Cycle 26, 0000-0118-401 0-FBIR, Revision 0, February 2011. 22.0 Supplemental Reload Licensing Report for Monticello Reload 25 Cycle 26, 0000-0118-401 0-SRLR, Revision 1, March 2011. 23.0 Monticello Nuclear Generating Plant, Cycle 26 Core Operating Limits Report. MN-025, Revision 0, April 2011. 24.0 Letter from D. Musolf (NSP) to Director, Office of Nuclear Reactor Regulation, NRC "Revision 1 to License Amendment Request Dated September 7, 1976, Single Loop Operation" dated July 2, 1982. 25.0 Supplemental Reload Licensing Report for Monticello Reload 26 Cycle 27 Extended Power Uprate (EPU), 0000-0146-5423-SRLR, Revision 3, October 2011. 26.0 Fuel Bundle Information Report for Monticello Reload 25 Cycle 26 Extended Power Uprate (EPU), 0000-0092-5748-FBIR, Revision 0, April 2011. 27.0 Supplemental Reload Licensing Report for Monticello Reload 25 Cycle 26 Extended Power Uprate (EPU), 0000-0092-5748-SRLR, Revision 1, November 2011. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 3 of 50 3.0 Rod Block Monitor Operability Requirements The ARTS Rod Withdrawal Error (RWE) analysis (Reference
: 2) validated that the following MCPR values provide the required margin for full withdrawal of any control rod during Monticello Cycle 27: For Power< 90%: MCPR 2 1.70 For Power 2 90%: MCPR 2 1.40 When the core power is less than 90% of rated and the MCPR is less than 1.70, then a limiting control rod pattern exists and the Rod Block Monitor is required to be operable.
If the core power is greater than or equal to 90% and the MCPR is less than 1.40, then a limiting control rod pattern exists and the Rod Block Monitor is required to be operable. 

==Reference:==
Technical Specification Table 3.3.2.1-1 Function 1. 4.0 Rod Block Monitor Upscale Trip Setpoint 4.1 Technical Specification Trip Setpoints and Allowable Values Function Low Power Range-Upscale (a) Intermediate Power Range-Upscale (b) High Power Range-Upscale (c), (d) Applicable Thermal Power Trip Setpoint 121.2/125 of full scale 116.2/125 of full scale 111.2/125 of full scale Allowable Values 121.6/125 of full scale 116.6/125 of full scale 111.6/125 of full scale (a) Thermal Power 30% and < 65% RTP and MCPR is below the limit specified in Section 3. (b) Thermal 65% and< 8.5% RTP and MCPR is below the limit specified in Section 3. (c) Thermal 85% and < 90% RTP and MCPR is below the limit specified in Section 3. (d) Thermal 90% RTP and MCPR is below the limit specified in Section 3. 

==Reference:==
Technical Specification Table 3.3.2.1-1 Functions 1.a, 1.b, and 1.c. The Reference for the "Trip Setpoints" and "Allowable Values" is Reference
: 16. 5.0 Minimum Critical Power Ratio (MCPR) 5.1 Option A The Operating Limit Minimum Critical Power Ratio (OLMCPR) for Option A does not account for scram speeds that are faster than those required by Technical Specifications.
5.1.1 Option A OLMCPR for Two Recirculation Loop Operation The Option A OLMCPR shall be determined for two recirculation loop operation as follows: If core thermal power (P) is 2 40% of rated core thermal power, then the Option A OLMCPR for all fuel types is the greater of {1.74
* K(P) from Figure 3} or {MCPR(F) from Figure 4}, where 1.74 is the Option A OLMCPR at rated (100%) core thermal power reported in Table 32. i.e. if P 2 40% rated core thermal power, then Option A OLMCPR limit =Maximum of 1.74 * {K(P) from Figure 3} or {MCPR(F) from Figure 4}. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 4 of 50 If core thermal power (P) is < 40% of rated core thermal power, the Option A OLMCPR for all fuel types is obtained from Figure 3. 

==Reference:==

Technical Specification Section 3.2.2. 5.1.2 Option A OLMCPR for Single Recirculation Loop Operation The Option A OLMCPR as defined above for two recirculation loop operation in Section 5.1.1 is the same OLMCPR to be used for single recirculation loop operation. 

==Reference:==
Technical Specification Section 3.2.2. 5.2 Option B Option B does take into account the measured scram speeds that are faster than the Technical Specification requirements, thus reducing the potential consequences of a limiting transient.
Calculation of the Option B OLMCPR value as a function of measured scram speeds is described in Section 10. 5.2.1 Option B OLMCPR for Two Recirculation Loop Operation The Option B OLMCPR shall be determined for two recirculation loop operation as follows: The rated (1 00%) core thermal power Option B OLMCPR ( ) is 1.62, and is reported in Table 32. This of 1.62 is modified as described in Section 10 to be a function of the measured scram speeds to yield Then, if core thermal power (P) is 40% of rated core thermal power, the Option B OLMCPR for all fuel types is the greater of: 
* {K(P) from Figure 3} or {MCPR(F) from Figure 4}, i.e. if P 40% rated core thermal power, then Option B OLMCPR limit =Maximum of
* K(P} from Figure 3} or {MCPR(F) from Figure 4}. If core thermal power (P) is < 40% of rated core thermal power, the Option B OLMCPR for all fuel types is obtained from Figure 3. 

==Reference:==
Technical Specification 3.2.2. 5.2.2 Option B OLMCPR for Single Recirculation Loop Operation The Option B OLMCPR as defined above for two recirculation loop operation in Section 5.2.1 is the same OLMCPR to be used for single recirculation loop operation. 

==Reference:==
Technical Specification 3.2.2. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 5 of 50 5.3 Pressure Regulator Out of Service (PROOS) Operation Reference 18 (GE SIL 614, Revision 1) describes the impact of operation without a backup pressure regulator (also called PROOS). This section provides power dependent MCPR limits when a backup pressure regulator is not operational.
A Pressure Regulator Fails Down-Scale (PRFDS) event without backup pressure regulator was evaluated for Monticello (Reference 19). This event resulted in a more restrictive Power Dependent MCPR limit than required for normal reduced power operation with both pressure regulators operational.
The off-rated flow dependent limits provided in Reference 19 have been validated for Cycle 27 (Reference 2). Figure 8 provides the required more restrictive power dependent MCPR ARTS limits for powers less than or equal to 85% and greater than or equal to 40%. For powers greater than 85% or below 40%, the power dependent MCPR and K(P} ARTS limits provided in Figure 3 are still valid. The ARTS limits are described in Reference
: 17. The new Pressure Regulator Out of Service limits are applicable for Cycle 27 (Reference 2). Figure 8 combines the unchanged limits from Figure 3 along with the more restrictive limits determined in Reference 2 for PROOS operation.
Figure 8 should only be used for operation without a backup pressure regulator.
Figure 8 is valid for both Option A and Option B OLMCPR limits. An interim MFLCPR Limit is provided in Figure 9. This limit should only be used if the Garde! thermal limit input has not been modified as described in Sections 5.3.1 or 5.3.2 to account for pressure regulator out of service operation.
I.e., only Figure 8 or Figure 9 should be used to provide the appropriate PROOS limit. These figures should not be utilized in combination.
5.3.1 OLMCPR for Two Recirculation Loop Operation, WITHOUT A BACKUP PRESSURE REGULATOR.
The Option A or B OLMCPR shall be determined for two recirculation loop operation as follows: The Option A OLMCPR is calculated as shown below for the Option B example with the following exception:
New
* The OLMCPRoptionB is replaced with the Option A OLMCPR of 1.74. The Option B OLMCPR is calculated as follows: The rated (100%) core thermal power Option B OLMCPR is 1.62, and is reported in Table 32. This of 1.62 is modified as described in Section 10 to be a function of the measured scram speeds to yield . Then, if core thermal power (P) is;::: 85% of rated core thermal power, the Option B OLMCPR for all fuel types is the greater of: 
* {K(P) from Figure 8} or {MCPR(F) from Figure 4}, i.e. if P;::: 85% rated core thermal power, then Option B OLMCPR limit =Maximum of
* K(P) from Figure 8} or {MCPR(F) from Figure 4}. If core thermal power (P) is < 85% of rated core thermal power, the OLMCPR for all fuel types is obtained from Figure 8. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 6 of 50 5.3.2 OLMCPR for Single Recirculation Loop Operation, WITHOUT A BACKUP PRESSURE REGULATOR The Option A orB OLMCPR as defined previously for two recirculation loop operation in Section 5.3.1 is the same OLMCPR to be used for single recirculation loop operation:
6.0 Power-Flow Map The Power-Flow Operating Map based on analysis to support Cycle 27 is shown in Figures 5 and 6. The Power-Flow Operating Map is consistent with a rated power of 2004 MWt as described in Reference
: 14. The Backup Stability Protection (BSP) lines are described in Section 9 of this report. Region I in Figures 5 and 6 is the Scram Region and Region II is the Controlled Entry Region. These two regions are applicable when the OPRM Upscale Trip is INOPERABLE.
7.0 Approved Analytical Methods NEDE-24011-P-A Rev. 19 "General Electric Standard Application for Reactor Fuel (GESTAR)" NEDE-24011-P-A-US Rev. 19 "General Electric Standard Application for Reactor Fuel (GESTAR)-Supplement for the United States." NED0-33075-A "General Electric Boiling Water Reactor Detect and Suppress Solution -Confirmation Density" January 2008. 8.0 Fuel Rod Heat Generation Rate 8.1 Maximum Average Planar Linear Heat Generation Rate (MAPLHGR) as a Function of Exposure The MAPLHGR limits in Tables 1 through 14 are conservative values bounding all fuel lattice types (all natural uranium lattices are excluded) in a given fuel bundle design, and are intended only for use in hand calculations as described below to establish MAPLHGR limits for Technical Specification 3.2.1. No channel bow effects are included in the bounding MAPLHGR values in Tables 1 through 14 as there are no reused channels.
MAPLHGR limits for each individual fuel lattice for a given bundle design as a function of axial location and average planar exposure are determined based on the approved methodology referenced in Monticello Technical Specification 5.6.3.b and are loaded into the process computer for use in core monitoring calculations.
When and if hand calculations are required:
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 7 of 50 8.1.1 Two-Recirculation loop Operation (MAPLHGR)
At rated core thermal power and core flow conditions, the MAPLHGR limit for each fuel bundle design as a function of average planar exposure shall not exceed the bounding limits provided in Tables 1 through 14. The MAPLHGR limit is adjusted for off-rated core thermal power and core flow conditions by determining the following:
MAPLHGR(P) 
= MAPFAC(P)
* MAPLHGR limit from Tables 1 through 14. MAPLHGR(F) 
= MAPFAC(F)
* MAPLHGR limit from Tables 1 through 14. where MAPFAC(P) and MAPFAC(F) are determined from Figures 1 and 2, respectively, and where P is the core thermal power in percent of rated, and F is the core flow in percent of rated. The Technical Specification (TS) MAPLHGR limit is determined as follows: MAPLHGR (TS) Limit= Minimum{MAPLHGR(P), MAPLHGR(F)}
Note that all natural uranium lattices are excluded in Tables 1 through 14. Straight line interpolation between nearest data points is permitted only within each individual Table of Tables 1 through 14. 8.1.2 Single Recirculation Loop Operation (MAPLHGR)
Note that Single Loop Operation is not permitted in the MELLLA+ region. When in single recirculation loop operation, perform the following:
8.1.2.1 Perform the action specified in Section 8.1.1 above. 8.1.2.2 Separately, apply the single loop operation multiplier to the limiting values of MAPLHGR from Tables 1 through 14 as follows: for GE14C: multiplier is 0.83. 8.1.2.3 Select the more limiting (i.e. smaller) value from Sections 8.1.2.1 or 8.1.2.2. 

==Reference:==

Technical Specification 3.2.1. 8.2 Linear Heat Generation Rate (LHGR) The uranium dioxide (U0 2) and gadolinia LHGR limits as a function of fuel rod peak pellet exposure for each bundle type in Cycle 27 is provided in Tables 15 through 28. The gadolinia LHGR limits in Tables 15 through 28 are bounding gadolinia LHGR limits for all the gadolinia concentrations occurring in each of the bundle types used in Cycle 27. The LHGR limits are fuel rod nodal limits, and are to be applied at every node of the fuel rod including the natural uranium lattices.
The individual LHGR limits for the uranium dioxide and gadolinia fuel rods in each fuel bundle type used in Cycle 27, as a function of axial location and pellet exposure are determined based on the approved methodology referenced in Monticello Technical Specification 5.6.3.b and are loaded into the process computer for use in core monitoring calculations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 8 of 50 The LHGR limits are presented in this report for use when and if hand calculations are performed to demonstrate compliance with Technical Specification 3.2.3. When and if hand calculations are performed:
8.2.1 Two-Recirculation Loop Operation (LHGR) At rated core thermal power and core flow conditions, the LHGR limit for each fuel bundle design as a function of peak pellet exposure and fuel pin type shall not exceed the bounding limits provided in Tables 15 through 28. The LHGR limit is adjusted for off-rated core thermal power and core flow conditions by determining the following:
LHGR(P) = MAPFAC(P)
* LHGR limit from Tables 15 through 28. LHGR(F) = MAPFAC(F)
* LHGR limit from Tables 15 through 28. where the multipliers MAPFAC(P) and MAPFAC(F) are determined from Figures 1 and 2, respectively, and where P is the core thermal power in percent of rated, and F is the core flow in percent of rated. The Technical Specification (TS) LHGR limit is determined as follows: LHGR TS Limit= Minimum{LHGR(P), LHGR(F)} Note that the LHGR limits are fuel rod nodal limits, and are to be applied at every node of the fuel rod, including the natural uranium lattices.
Straight line interpolation between nearest data points is permitted only within each individual Tables 15 through 28. 8.2.2 Single Recirculation Loop Operation (LHGR) Note that Single Loop Operation is not permitted in the MELLLA+ region. When in single recirculation loop operation, perform the following:
8.2.2.1 Perform the same action specified in Section 8.2.1 above. There are no separate single loop operation specific multipliers applicable to LHGR, i.e. the multipliers from Section 8.2.1 also apply to single recirculation loop operation. 

==Reference:==

Technical Specification Section 3.2.3. 8.3 Pressure Regulator Out of Service (PROOS) Operation Reference 18 (GE SIL 614, Revision 1) describes the impact of operation without a backup pressure regulator (also called PROOS). This section provides power dependent MAPLHGR and LHGR limits when a backup pressure regulator is not operational.
The Pressure Regulator Fails Down-Scale (PRFDS) event without backup pressure regulator evaluated for Monticello in Reference 19 resulted in more restrictive Power Dependent MAPLHGR and LHGR limits than required for normal reduced power operation with both pressure regulators operational. When this event was re-evaluated for Cycle 27 (Reference 2), the results confirmed the MAPLHGR and LHGR limits from Reference
: 19. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 9 of 50 The MAPLHGR and LHGR limits are adjusted for off-rated core thermal power and core flow conditions by determining the following:
MAPLHGR(P) 
= MAPFAC(P)
* MAPLHGR limit from Tables 1 through 14. LHGR(P) = MAPFAC(P)
* LHGR limit from Tables 15 through 28. where MAPFAC(P) is determined from Figure 1 and where P is the core thermal power in percent of rated. The Technical Specification (TS) MAPLHGR and LHGR limits are determined as follows: MAPLHGR (TS) Limit= Minimum{MAPLHGR(P), MAPLHGR(F)}
LHGR (TS) Limit= Minimum{LHGR(P), LHGR(F)} Figure 10 combines the unchanged limits from Figure 1 along with the more restrictive limits determined in Reference 2 for PROOS operation.
Figure 10 should only be used for operation without a backup pressure regulator.
Interim MAPRAT and MFLPD Limits are provided in Figures 11 and 12, respectively, to address the more restrictive MAPLHGR and LHGR Limits identified in the Reference 2 analysis.
These limits should only be used if the Garde! thermal limit input has not been modified to account for pressure regulator out of service operation.
I.e., only Figure 10 or Figure 11 should be used to provide the appropriate PROOS MAPLHGR limit; and only Figure 10 or Figure 12 should be used to provide the appropriate PROOS LHGR limit. Figure 10 should not be utilized in combination with either Figure 11 or Figure 12. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 10 of 50 Notes: Table 1 MAPLHGR Limits <1> GE14C EDB-2931<2> GE14-P1 ODNAB392-16GZ-1 OOT-145-T6-2931 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)<3> 0.00 ( 0.00) 8.49 0.22 ( 0.20) 8.53 1.10 ( 1.00) 8.60 2.20 ( 2.00) 8.70 3.31 ( 3.00) 8.80 4.41 ( 4.00) 8.90 5.51 ( 5.00) 9.00 6.61 ( 6.00) 9.10 7.72 ( 7.00) 9.19 8.82 ( 8.00) 9.28 9.92 ( 9.00) 9.38 11.02 (10.00) 9.50 12.13 (11.00) 9.62 13.23 (12.00) 9.71 14.33 (13.00) 9.69 15.43 (14.00) 9.69 16.53 (15.00) 9.66 18.74 (17.00) 9.58 22.05 (20.00) 9.44 27.56 (25.00) 9.22 33.07 (30.00) 9.04 38.58 (35.00) 8.84 38.85 (35.24) 8.82 44.09 (40.00) 8.35 49.60 (45.00) 7.81 55.12 (50.00) 6.87 55.50 (50.35) 6.77 60.63 (55.00) 5.44 63.13 (57.27) 4.68 63.50 (57.61) 4.68 63.54 (57.65) 4.68 63.68 (57.77) 4.68 63.73 (57.82) 4.68 <1> Values in Table 1 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2> Engineering Data Bank (EDB) number, Reference
: 2. <3> MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 11 of 50 Notes: Table 2 MAPLHGR Limits (1 l GE14C EDB-31 00(2> GE14-P1 ODNAB424-14GZ-100T-145-T6-3100 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)(3 l 0.00 ( 0.00) 7.80 0.22 ( 0.20) 7.87 1.10 ( 1.00) 7.97 2.20 ( 2.00) 8.10 3.31 ( 3.00) 8.21 4.41 (4.00) 8.32 5.51 ( 5.00) 8.42 6.61 ( 6.00) 8.53 7.72 ( 7.00) 8.64 8.82 ( 8.00) 8.75 9.92( 9.00) 8.86 11.02 (10.00) 8.98 12.13 (11.00) 9.08 13.23 (12.00) 9.16 14.33 (13.00) 9.20 15.43 (14.00) 9.23 16.53 (15.00) 9.26 17.64 (16.00) 9.30 18.74 (17.00) 9.35 19.84 (18.00) 9.39 20.94 (19.00) 9.43 22.05 (20.00) 9.46 23.15 (21.00) 9.48 24.25 (22.00) 9.50 25.35 (23.00) 9.52 26.46 (24.00) 9.53 27.56 (25.00) 9.50 33.07 (30.00) 9.29 38.58 (35.00) 9.01 38.85 (35.24) 8.99 44.09 (40.00) 8.56 49.60 (45.00) 7.80 55.12 (50.00) 6.66 55.50 (50.35) 6.54 60.63 (55.00) 4.93 60.90 (55.25) 4.85 60.96 (55.30) 4.85 62.80 (56.97) 4.85 63.16 (57.30) 4.85 (1 l Values in Table 2 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 (2 l Engineering Data Bank (EDB) number, Reference
: 2. (3) MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 12 of 50 Notes: Table 3 MAPLHGR Limits 11 l GE14C EDB-31 01 12 l GE14-P10DNAB375-16GZ-100T-145-T6-3101 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)131 0.00 ( 0.00) 8.35 0.22 ( 0.20) 8.40 1.10(1.00) 8.48 2.20 ( 2.00) 8.55 3.31 ( 3.00) 8.62 4.41 ( 4.00) 8.68 5.51 ( 5.00) 8.75 6.61 ( 6.00) 8.82 7.72 ( 7.00) 8.89 8.82 ( 8.00) 8.97 9.92 ( 9.00) 9.07 11.02 (10.00) 9.18 12.13 (11.00) 9.29 13.23 (12.00) 9.37 14.33 (13.00) 9.40 15.43 (14.00) 9.41 16.53 (15.00) 9.39 17.64 (16.00) 9.36 18.74 (17.00) 9.33 19.84 (18.00) 9.30 20.94 (19.00) 9.26 22.05 (20.00) 9.21 23.15 (21.00) 9.17 24.25 (22.00) 9.13 25.35 (23.00) 9.09 26.46 (24.00) 9.05 27.56 (25.00) 9.01 33.07 (30.00) 8.84 38.58 (35.00) 8.60 38.85 (35.24) 8.58 44.09 (40.00) 8.13 49.60 (45.00) 7.57 55.12 (50.00) 6.58 55.50 (50.35) 6.47 60.63 (55.00) 5.02 61.88 (56.14) 4.64 61.93 (56.19) 4.64 62.00 (56.24) 4.64 62.53 (56.72) 4.64 11 l Values in Table 3 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 12 l Engineering Data Bank (EDB) number, Reference
: 2. 13 l MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 13 of 50 Notes: Table 4 MAPLHGR Limits (1 l GE14C EDB-31 02 12> GE14-P1 ODNAB392-16GZ-1 OOT-145-T6-31 02 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13> 0.00 ( 0.00) 8.50 0.22 ( 0.20) 8.54 1.10 ( 1.00) 8.61 2.20 ( 2.00) 8.71 3.31 ( 3.00) 8.81 4.41 ( 4.00) 8.90 5.51 ( 5.00) 9.01 6.61 ( 6.00) 9.10 7.72 ( 7.00) 9.18 8.82 ( 8.00) 9.27 9.92 ( 9.00) 9.37 11.02(10.00) 9.49 12.13 (11.00) 9.61 13.23 (12.00) 9.70 14.33 (13.00) 9.63 15.43 (14.00) 9.64 16.53 (15.00) 9.62 17.64 (16.00) 9.59 18.74 (17.00) 9.56 19.84 (18.00) 9.52 20.94 (19.00) 9.48 22.05 (20.00) 9.43 23.15 (21.00) 9.39 24.25 (22.00) 9.34 26.46 (24.00) 9.26 27.56 (25.00) 9.22 33.07 (30.00) 9.03 38.58 (35.00) 8.82 38.85 (35.24) 8.80 44.09 (40.00) 8.33 49.60 (45.00) 7.85 55.12 (50.00) 6.84 55.50 (50.35) 6.74 60.63 (55.00) 5.39 63.00 (57.16) 4.67 63.41 (57.53) 4.67 63.50 (57.61) 4.67 63.52 (57.62) 4.67 63.66 (57. 75) 4.67 (1 J Values in Table 4 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 (2 J Engineering Data Bank (EDB) number, Reference
: 2. (3 J MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 14 of 50 Notes: Table 5 MAPLHGR Limits 1 1 l GE14C EDB-3103 12) GE14-P10DNAB391-12GZ-100T-145-T6-3103 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13 l 0.00 ( 0.00) 8.90 0.22 ( 0.20) 8.92 1.10 ( 1.00) 8.97 2.20 ( 2.00) 9.03 3.31 ( 3.00) 9.09 4.41 ( 4.00) 9.16 5.51 ( 5.00) 9.23 6.61 ( 6.00) 9.30 7.72 ( 7.00) 9.35 8.82 ( 8.00) 9.42 9.92 ( 9.00) 9.49 11.02 (10.00) 9.56 12.13 (11.00) 9.65 13.23 (12.00) 9.69 14.33 (13.00) 9.63 15.43 (14.00) 9.64 16.53 (15.00) 9.63 17.64 (16.00) 9.60 18.74 (17.00) 9.57 19.84 (18.00) 9.52 20.94 (19.00) 9.48 22.05 (20.00) 9.43 23.15 (21.00) 9.39 24.25 (22.00) 9.35 25.35 (23.00) 9.30 26.46 (24.00) 9.26 27.56 (25.00) 9.22 33.07 (30.00) 9.03 38.58 (35.00) 8.83 38.85 (35.24) 8.80 44.09 (40.00) 8.33 49.60 (45.00) 7.85 55.12 (50.00) 6.84 55.50 (50.35) 6.74 60.63 (55.00) 5.39 62.99 (57.14) 4.67 63.50 (57.61) 4.67 63.60 (57.70) 4.67 63.61 (57.71) 4.67 63.64 (57.73) 4.67 11) Values in Table 5 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2) Engineering Data Bank (EDB) number, Reference
: 2. 13 l MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 15 of 50 Notes: Table 6 MAPLHGR Limits 11> GE14C EDB-3375 12> GE14-P10DNAB373-16GZ-100T-145-T6-3375 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13 l 0.00 ( 0.00) 8.31 0.22 ( 0.20) 8.37 1.10(1.00) 8.44 2.20 ( 2.00) 8.51 3.31 ( 3.00) 8.58 4.41 ( 4.00) 8.64 5.51 ( 5.00) 8.71 6.61 ( 6.00) 8.78 7.72 ( 7.00) 8.85 8.82 ( 8.00) 8.93 9.92 ( 9.00) 9.03 11.02 (10.00) 9.14 12.13 (11.00) 9.25 13.23 (12.00) 9.33 14.33 (13.00) 9.41 15.43 (14.00) 9.48 16.53 (1.5.00) 9.54 17.64 (16.00) 9.60 18.7 4 (17.00) 9.64 19.84 (18.00) 9.68 20.94 (19.00) 9.64 22.05 (20.00) 9.60 23.15 (21.00) 9.56 24.25 (22.00) 9.51 25.35 (23.00) 9.46 26.46 (24.00) 9.41 27.56 (25.00) 9.36 33.07 (30.00) 9.12 38.58 (35.00) 8.90 38.85 (35.24) 8.87 44.09 (40.00) 8.38 49.60 (45.00) 7.84 55.12 (50.00) 6.89 55.50 (50.35} 6.77 60.63 (55.00) 5.22 61.77 (56.04} 4.86 61.83 (56.09) 4.86 63.07 (57.22) 4.85 63.11 (57 .25) 4.84 11> Values in Table 6 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2> Engineering Data Bank (EDB) number, Reference
: 2. <3> MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 16 of 50 Notes: Table 7 MAPLHGR Limits <1 l GE14C EDB-3376<2! GE14-P10DNAB391-16GZ-100T 
-145-T6-3376 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/tt)<3 l 0.00 ( 0.00} 8.51 0.22( 0.20) 8.55 1.10 ( 1.00} 8.62 2.20( 2.00) 8.70 3.31 ( 3.00) 8.78 4.41 ( 4.00) 8.87 5.51 ( 5.00} 8.96 6.61_( 6.00) 9.05 7.72 ( 7.00) 9.14 8.82( 8.00)_ 9.24 9.92 ( 9.00) 9.33 11.02(1 0.001 9.41 12.13 (11.00) 9.51 13.23_(12.001 9.58 14.33 (13.00) 9.65 15.43_(14.00}_
9.73 16.53 (15.00) 9.80 17 .64(16.00) 9.87 18.74 (17.00) 9.93 19.84 (18.00) 9.97 20.94 (19.00) 9.95 22.05 (20.00) 9.89 23.15 (21.00) 9.82 24.25 (22.00) 9.76 25.35 (23.00) 9.70 26.46 (24.00) 9.64 27.56 (25.00) 9.59 33.07 (30.00) 9.32 38.58 (35.00) 9.12 38.85 (35.24) 9.10 44.09 (40.00) 8.70 49.60 (45.00) 8.19 55.12 (50.00) 7.26 55.50 (50.35) 7.16 60.63 (55.00) 5.77 63.36 (57.48) 4.89 63.50 (57 .61) 4.88 63.51 (57.62) 4.88 64.05 (58.11) 4.88 64.10(58.15) 4.87 <1 l Values in Table 7 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2 l Engineering Data Bank (EDB) number, Reference
: 2. <3 l MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 17 of 50 Notes: Table 8 MAPLHGR Limits 11 l GE14C EDB-3377(2)
Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13 l 0.00 ( 0.001 8.39 0.22 ( 0.20) 8.44 1.10(1.00) 8.53 2.20 ( 2.00} 8.66 3.31 ( 3.00) 8.81 4.41 ( 4.00} 8.91 5.51 ( 5.00) 9.00 6.61 ( 6.00} 9.09 7.72 ( 7.00) 9.19 8.82 ( 8.00) 9.28 9.92 ( 9.00) 9.38 11.02 (10.00) 9.46 12.13 (11.00) 9.56 13.23 (12.00) 9.63 14.33 (13.00) 9.70 15.43 (14.00) 9.78 16.53 (15.00) 9.85 17.64 (16.00) 9.91 18.74 (17.00) 9.96 19.84 (18.00) 10.00 20.94 (19.00) 9.96 22.05 (20.00) 9.89 23.15 (21.00) 9.83 24.25 (22.00) 9.77 25.35 (23.00) 9.71 26.46 (24.00) 9.65 27.56 (25.00) 9.59 33.07 (30.00) 9.33 38.58 (35.00) 9.12 38.85 (35.24) 9.10 44.09 (40.00) 8.70 49.60 (45.00) 8.16 55.12 (50.00) 7.26 55.50 (50.35) 7.15 60.63 (55.00) 5.77 63.41 (57.53) 4.88 63.42 (57.53) 4.88 63.50 (57.61) 4.88 63.99 (58.05) 4.88 64.04 (58.09} 4.87 11) Values in Table 8 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 !2) Engineering Data Bank (EDB) number, Reference
: 2. 13 l MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 Page 18 of 50 Notes: Table 9 MAPLHGR Limits (1 l GE14C EDB-3378<2> GE14-P1 ODNAB391-12GZ-1 OOT-145-T6-3378 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)(3 l 0.00 (0.00) 8.90 0.22 (0.20) 8.93 1.10(1.00) 9.00 2.20 (2.00) 9.09 3.31 (3.00) 9.16 4.41 (4.00) 9.22 5.51 (5.00) 9.28 6.61 (6.00) 9.35 7.72 (7.00) 9.42 8.82 (8.00) 9.50 9.92 (9.00) 9.57 11.02 (10.00) 9.64 12.13 (11.00) 9.70 13.23 (12.00) 9.76 14.33 (13.00) 9.80 15.43 (14.00) 9.85 16.53 (15.00) 9.89 17.64 (16.00) 9.93 18.74 (17.00) 9.96 19.84 (18.00) 9.98 20.94 (19.00) 10.00 22.05 (20.00) 9.96 23.15(21.00) 9.91 24.25 (22.00) 9.87 25.35 (23.00) 9.82 26.46 (24.00) 9.77 27.56 (25.00) 9.72 33.07 (30.00) 9.48 38.58 (35.00) 9.21 38.85 (35.24) 9.19 44.09 (40.00) 8.79 49.60 (45.00) 8.21 55.12 (50.00) 7.28 55.50 (50.35) 7.18 60.63 (55.00) 5.81 63.50 (57.61) 4.90 63.64 (57.74) 4.85 63.66 (57.75) 4.85 64.05 (58.1 0) 4.85 64.09 (58.14) 4.85 <1> Values in Table 9 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2> Engineering Data Bank (EDB) number, Reference
: 2. <3> MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 19 of 50 Notes: Table 10 MAPLHGR Limits 11 l GE14C EDB-2932 12 l GE14-P1 ODNAB392-17GZ-1 OOT-145-T6-2932 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13 l 0.00 (0.00) 8.36 0.22 (0.20) 8.41 1.10(1.00) 8.50 2.20 (2.00) 8.62 3.31 (3.00) 8.75 4.41 (4.00) 8.88 5.51 (5.00) 9.01 6.61 (6.00) 9.14 7.72 (7.00) 9.28 8.82 (8.00) 9.40 9.92 (9.00) 9.52 11.02 (10.00) 9.65 12.13 (11.00) 9.77 13.23 (12.00) 9.85 14.33 (13.00) 9.92 15.43 (14.00) 9.97 16.53 (15.00) 10.01 18.74 (17.00) 10.05 22.05 (20.00) 9.90 27.56 (25.00) 9.62 33.07 (30.00) 9.36 38.58 (35.00) 9.13 38.85 (35.24) 9.10 44.09 (40.00) 8.58 49.60 (45.00) 8.02 55.12 (50.00) 7.13 55.50 (50.35) 7.04 60.63 (55.00) 5.83 63.50 (57.61) 4.91 63.57 (57.67) 4.89 63.70 (57.79) 4.88 64.44 (58.46) 4.88 64.48 (58.50) 4.88 (1) Values in Table 10 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2 l Engineering Data Bank (EDB) number, Reference
: 2. (3) MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 20 of 50 Notes: Table 11 MAPLHGR Limits 11> GE14C EDB-4175 121 GE14-P10DNAB372-17GZ-100T-145-T6-4175 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kWift)131 0.00 (0.00) 8.34 0.22 (0.20) 8.38 1.10 (1.00) 8.45 2.20 (2.00) 8.54 3.31 (3.00) 8.65 4.41 (4.00) 8.76 5.51 (5.00) 8.87 6.61 (6.00) 8.99 7.72 (7.00) 9.12 8.82 (8.00) 9.25 9.92 (9.00) 9.39 11.02(10.00}
9.51 12.13 (11.00) 9.63 13.23 (12.00) 9.70 14.33 (13.00) 9.75 15.43 (14.00) 9.81 16.53 (15.00) 9.88 17.64 (16.00) 9.83 18.74{17.00) 9.78 19.84 (18.00) 9.74 20.94 (19.00) 9.71 22.05 (20.00) 9.66 23.15 (21.00) 9.61 25.35 (23.00) 9.50 26.46 (24.00) 9.45 27.56 (25.00) 9.41 33.07 (30.00) 9.19 38.58 (35.00) 9.01 38.85 (35.24) 8.99 44.09 (40.00) 8.54 49.60 (45.00) 8.04 55.12_(50.00) 7.19 55.50 (50.35) 7.09 60.63 (55.00) 5.77 63.44 (57.55) 4.88 63.50 (57.61) 4.88 63.70 (57.79) 4.87 64.88 _(58.86) 4.87 65.11 (59.07) 4.87 <11 Values in Table 11 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2> Engineering Data Bank (EDB) number, Reference
: 2. <3> MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 21 of 50 Notes: Table 12 MAPLHGR Limits C 1 l GE14C EDB-4176<21 GE14-P10DNAB386-16GZ-100T-145-T6-4176 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kWift)131 0.00 (0.00) 8.48 0.22 (0.20) 8.52 1.10(1.00) 8.58 2.20 (2.00) 8.66 3.31 (3.00) 8.74 4.41 (4.00) 8.82 5.51 (5.00) 8.90 6.61 (6.00) 8.98 7.72 (7.00) 9.06 8.82 (8.00) 9.15 9.92 (9.00) 9.24 11.02 (1 0.00) 9.33 12.13 (11.00) 9.43 13.23 (12.00) 9.48 14.33 (13.00) 9.54 15.43 (14.00) 9.61 16.53 (15.00) 9.68 17.64 (16.00) 9.75 18.74 (17.00) 9.81 19.84 (18.00) 9.86 20.94 (19.00) 9.89 22.05 (20.00) 9.88 23.15 (21.00) 9.84 24.25 (22.00) 9.78 25.35 (23.00) 9.73 26.46 (24.00) 9.68 27.56 (25.00) 9.63 33.07 (30.00) 9.39 38.58 (35.00) 9.14 38.85 (35.24} 9.12 44.09 (40.00) 8.69 49.60 (45.00) 8.12 55.12 (50.00) 7.22 55.50 (50.35) 7.11 60.63 (55.00) 5.62 62.89 (57.06) 4.89 63.16 (57.30) 4.89 63.50 (57.61) 4.89 64.67 (58.67) 4.89 65.28 (59.23) 4.89 <1 l Values in Table 12 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2 l Engineering Data Bank (EDB) number, Reference
: 2. <3 l MAPLHGR Data, Reference.
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 Page 22 of 50 Notes: Table 13 MAPLHGR Limits (1 l GE 14C EDB-4177<2> G E14-P1 ODNAB386-16GZ-1 DOT -145-T6-4177 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)(3 l 0.00 (0.00) 8.50 0.22 (0.20) 8.54 1.10(1.00) 8.60 2.20 (2.00) 8.68 3.31 (3.00) 8.76 4.41 (4.00) 8.84 5.51 (5.00) 8.93 6.61 (6.00) 9.02 7.72 (7.00) 9.11 8.82 (8.00) 9.20 9.92 (9.00) 9.30 11.02 (10.00) 9.39 12.13 (11.00) 9.48 13.23 (12.00) 9.54 14.33 (13.00) 9.59 15.43 (14.00) 9.64 16.53 (15.00) 9.70 17.64 (16.00) 9.76 18.74 (17.00) 9.82 19.84 (18.00) 9.86 20.94 (19.00) 9.89 22.05 (20.00) 9.84 23.15 (21.00) 9.79 24.25 (22.00) 9.75 25.35 (23.00) 9.70 26.46 (24.00) 9.66 27.56 (25.00) 9.62 33.07 (30.00) 9.39 38.58 (35.00) 9.14 38.85 (35.24) 9.12 44.09 (40.00) 8.69 49.60 (45.00) 8.12 55.12 (50.00) 7.23 55.50 (50.35) 7.12 60.63 (55.00) 5.65 63.02 (57.17) 4.88 63.12 (57.26) 4.88 63.50 (57.61) 4.88 64.64 (58.64) 4.88 65.26 (59.20) 4.88 (1) Values in Table 13 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 <2> Engineering Data Bank (EDB) number, Reference
: 2. (3) MAPLHGR Data, Reference 
.25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 23 of 50 Notes: Table 14 MAPLHGR Limits 11 l GE14C EDB-4178 12> GE14-P10DNAB389-11GZ-100T-145-T6-4178 Average Planar Exposure MAPLHGR Limit GWD/MTU (GWD/STU) (kW/ft)13 l 0.00 (0.00) 8.94 0.22 (0.20) 9.01 1.10(1.00) 9.09 2.20 (2.00) 9.15 3.31 (3.00) 9.21 4.41 (4.00) 9.28 5.51 (5.00) 9.35 6.61 (6.00) 9.41 7.72 (7.00) 9.49 8.82 (8.00) 9.56 9.92 (9.00) 9.64 11.02 (10.00) 9.71 12.13 (11.00) 9.79 13.23 (12.00) 9.86 14.33 (13.00) 9.88 15.43 (14.00) 9.90 16.53 (15.00) 9.92 17.64 (16.00) 9.94 18.74 (17.00) 9.96 19.84 (18.00) 9.96 20.94 (19.00) 9.97 22.05 (20.00) 9.94 23.15 (21.00) 9.89 24.25 (22.00) 9.84 25.35 (23.00) 9.79 26.46 (24.00) 9.73 27.56 (25.00) 9.68 33.07 (30.00) 9.43 38.58 (35.00) 9.16 38.85 (35.24) 9.14 44.09 (40.00) 8.71 49.60 (45.00) 8.12 55.12 (50.00) 7.32 55.50 (50.35) 7.21 60.63 (55.00) 5.84 63.50 (57.61) 4.91 63.61 (57.71) 4.88 63.63 (57.72) 4.88 65.22 (59.17) 4.88 65.83 (59. 72) 4.86 11> Values in Table 14 are for two recirculation loop operation, see Section 8.1.1. For single loop operation, see Section 8.1.2 12> Engineering Data Bank (EDB) number, Reference
: 2. 13 l MAPLHGR Data, Reference
: 25. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 24 of 50 Table 15 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB392-16GZ-100T-145-T6-2931 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 2931 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 16 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle lype: GE14-P10DNAB392-17GZ-100T-145-T6-2932 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 2932 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.53 ( 12.28) 55.50 (50.35) 8.80 52.69 (47.80) 63.50 (57.61) 7.10 60.63 (55.00) 70.00 (63.50) 5.00 67.07 (60.84) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.26 12.26 8.05 6.49 4.57 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 25 of 50 Table 17 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB424-14GZ-100T-145-T6-3100 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 3100 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 18 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB375-16GZ-100T-145-T6-3101 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 3101 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 26 of 50 Table 19 2 U02/Gd Thermal Mechanical LHGR Limits * (Reference
: 5) Bundle Type: GE14-P10DNAB392-16GZ-100T-145-T6-3102 (GE14C) Engineering Data Bank (EDB) Bundle Number 1: 3102 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 ( 12. 17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 20 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB391-12GZ-100T-145-T6-3103 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 3103 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 Page 27 of 50 Table 21 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB373-16GZ-100T-145-T6-3375 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 3375 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 22 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB391-16GZ-100T-145-T6-3376 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 3376 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 28 of 50 Table 23 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB391-15GZ-100T-145-T6-3377 (GE14C) E . . D t B k (EDB) B dl N b 1 3377 ng1neenng a a an un e um er Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 24 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P1 ODNAB391-12GZ-1 OOT-145-T6-3378 (GE14C) 1 Engineering Data Bank (EDB) Bundle Number : 3378 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 29 of 50 Table 25 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB372-17GZ-100T-145-T6-4175 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 4175 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 26 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB386-16GZ-100T-145-T6-4176 (GE14C) Engineering Data Bank (EDB) Bundle Number 1* 4176 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 30 of 50 Table 27 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P10DNAB386-16GZ-100T-145-T6-4177 (GE14C) Engineering Data Bank (EDB) B*undle Number 1* 4177 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
Table 28 2 U02/Gd Thermal Mechanical LHGR Limits (Reference
: 5) Bundle Type: GE14-P1 ODNAB389-11 GZ-1 OOT-145-T6-4178 (GE14C) 1 Engineering Data Bank (EDB) Bundle Number : 4178 Peak Pellet Exposure U02 LHGR Limit Peak Pellet Exposure GWd/MT (GWD/ST) (kW/ft) GWd/MT (GWD/ST) 0.00 ( 0.00) 13.40 0.00 ( 0.00) 16.00 (14.51) 13.40 13.42 (12.17) 55.50 (50.35) 8.80 52.30 (47.45) 63.50 (57.61) 7.10 60.17 (54.59) 70.00 (63.50) 5.00 66.57 (60.39) Notes: 1. Reference
: 5. Most Limiting Gadolinia LHGR Limit (kW/ft) 12.00 12.00 7.88 6.36 4.48 2. Applicable multipliers per Section 8.2 will be applied to the data in this table for two recirculation loop and single recirculation loop operations.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 31 of 50 9.0 Core Stability Requirements Stability DSS-CD Solution Monticello has implemented the DSS-CD Long Term Stability solution using the Oscillation Power Range Monitor (OPRM) as described in Reference
: 11. Plant-specific analyses for the DSS-CD solution are provided in Reference
: 12. The Detect and Suppress function of the DSS-CD solution based on the OPRM system relies on the Confirmation Density Algorithm (CDA), which constitutes the licensing basis. The Backup Stability Protection (BSP) solution should be used by the plant in the event that the OPRM system is declared inoperable.
The CDA enabled through the OPRM system and the BSP solution described in Reference 12 provide the stability licensing bases for Monticello Cycle 27. The safety evaluation report for Reference 11 concluded that the DSS-CD solution is acceptable subject to certain cycle-specific limitations and conditions.
These cycle-specific limitations and conditions are met for Monticello Cycle 27. Detect and Suppress Evaluation A reload DSS-CD evaluation has been performed in accordance with the licensing methodology described in Reference 11 to confirm the Amplitude Discriminator Setpoint (SAo) of the CDA established in Reference
: 12. The Cycle 27 DSS-CD evaluation and the results for the DSS-CD Reload Confirmation Applicability Checklist documented in Reference 2 demonstrate that: 1) the DSS-CD Solution is applicable to Monticello Cycle 27; and, 2) the SAo =1.1 0 established in Reference 12 is confirmed for operation of Monticello Cycle 27. The SAo =1.1 0 setpoint is applicable to TLO and to SLO. NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 Page 32 of 50 Backup Stability Protection Reference 11 describes two BSP options that are based on selected elements from three distinct constituents:
BSP Manual Regions, BSP Boundary, and Automated BSP (ABSP) setpoints.
The BSP options are only applicable when the Upscale Trip function of the OPRM is INOPERABLE.
Upon declaring the Upscale Trip function of the OPRM INOPERABLE, the BSP Manual Regions are immediately implemented.
Then, the ABSP scram is implemented as directed in TS LCO 3.3.1.1.1.
If the ABSP scram is not implemented as directed in TS LCO 3.3.1.1.1, then the plant is maneuvered to operate below the BSP Boundary.
The Manual BSP region boundaries and the BSP Boundary were calculated for Monticello Cycle 27 for normal feedwater temperature operation.
The endpoints of the regions are defined in Table 29. The Scram Region boundary, the Controlled Entry Region boundary, and the BSP Boundary are shown in Figure 5, and are given in greater detail in Figure 6. The region boundaries shown in Figures 5 and 6 are defined using the Generic Shape Function (GSF), which is described in Reference
: 11. The BSP Boundary shown in Figures 5 and 6 is a straight line through the endpoints defined in Table 29. The ABSP APRM Simulated Thermal Power setpoints associated with the ABSP Scram Region from Reference 13 are confirmed for Cycle 27 and are defined in Table 30. These ABSP setpoints bound both TLO and SLO. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 33 of 50 Table 29 BSP Endpoints for Normal Feedwater Temperature Endpoint Power(%) Flow(%) Definition A1 71.3 43.0 Scram Region Boundary, HFCL B1 42.6 33.7 Scram Region Boundary, NCL Controlled Entry A2 83.6 58.9 Region Boundary, HFCL Controlled Entry B2 28.6 31.2 Region Boundary, NCL A3 100.0 85.2 BSP Boundary Intercept, HFCL BSP Boundary B3 75.3 57.4 Intercept, MELLLA+ Boundary at Minimum Flow Table 30 ABSP Nominal Setpoints for the Scram Region Parameter Symbol Value Slope of ABSP APRM flow-m 1.30 biased trip linear segment. ABSP APRM flow-biased trip setpoint power intercept.
Constant Power Line for Trip PssP-TRIP 38.0% RTP* from zero Drive Flow to Flow Breakpoint value. ABSP APRM flow-biased trip setpoint drive flow intercept.
WssP-TRIP 55.8% RDF** Constant Flow Line for Trip. Flow Breakpoint value WssP-BREAK 37.9% RDF**
* RTP -Rated Thermal Power ** RDF-Recirculation Drive Flow Actions For Entry Into Scram Region Immediate manual scram upon determination that the region has been entered. If entry is unavoidable, early scram initiation is appropriate.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 34 of 50 Actions For Entry Into Controlled Entry Region If entry is inadvertent or forced, immediately exit from region is required.
The region can be exited by control rod insertion or core flow increase.
Increasing the core flow by restarting an idle recirculation pump is not an acceptable method of exiting the region. Deliberate entry into the Controlled Entry Region requires compliance with at least one of the stability controls outlined below: 1. Maintain core average boiling boundary (BB) 4.0 feet. 2. Maintain core decay ratio (DR) < 0.6 as calculated by an on-line stability monitor. 3. Determine appropriated limits for core DR (<0.60) as calculated by a core stability monitor or by pre-analysis of a reactor state trajectory through the Manual BSP Controlled Entry Region. 4. Continuous dedicated monitoring of real time control room neutron monitoring instrumentation with manual scram required upon indication of a reactor instability induced power oscillation.
Caution is required whenever operating near the Controlled Entry Region boundary, and it is recommended that the amount of time spent operating near this region be minimized. 

==Reference:==

Technical Specification 3.3.1.1 10.0 Scram Time Dependence The Technical Specification Option A (no scram times dependence)
OLMCPR can be found in Section 5 of this report. If the Option B scram time dependence option is preferred, then the procedure listed in Section 10.1 may be used. 10.1 Technical Specification Scram Time Dependence Technical Specification 3.1.4 and Table 3.1.4-1 provide the scram insertion time versus position requirements for continued operations.
Technical Specification Surveillance Requirements SR 3.1.4.1 -SR 3.1.4.4 provide the surveillance requirements for the CRDs. Data from testing of the CRDs, or from an unplanned scram, is summarized in Surveillance Test 0081. Reference 8 describes the procedure below. Using this cycle specific information, values of Tave can be calculated in accordance with the equation below for the notch 36 position.
The Equation (1) used to calculate the average of all the scram data generated to date in the cycle is: n LNtri Tave = i=l n (1) LNi i=l where: n = the number of surveillance tests performed to date in the cycle; NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 35 of 50  
/1 INiri= i=l total number of active control rods measured to date in the cycle; and sum of the scram times to the 36th notch position of all active rods measured to date in the cycle to comply with the Technical Specification surveillance requirements SR 3.1.4.1, SR 3.1.4.2, SR 3.1.4.3, SR 3.1.4.4. The average scram time, Tave is tested against the analysis mean using the following equation:
T ave < T B where: (j (2) (3) The parameters 11 and a are the mean and standard deviation of the distribution of the average scram insertion time to notch 36 position in the ODYN Option 8 analysis (Table 31 ), and N1 = number of active control rods tested at SOC. Table 31 GEMINI Methods, CRD Notch Position for 'ts Determination 0' 0.830 0.019 If the cycle average scram time satisfies the Equation 2 criteria, continued plant operation under the ODYN Option 8 operating limit minimum critical power ratio (OLMCPR) for pressurization events is permitted.
If not, the OLMCPR for pressurization events must be re-established, based on linear interpolation between the Option 8 and Option A OLMCPRs. Note that Option 8 has an OLMCPR applicable to two recirculation loop operation, and an OLMCPR applicable to single recirculation loop operation.
The Option 8 OLMCPR value for single recirculation loop operation is the same as the Option 8 OLMCPR value for two recirculation loop operation.
The equation to establish the new operating limit for pressurization events is given below: 100% 'rave -TB ) OLMCPRNEw 
= OLMCPR 0 tionB + 1'10LMCPR,OLMCPRnwBP (4) p TA -TB where: NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 Page 36 of 50 "Cave and 'ts are defined in Equations 1 and 3, respectively; and 't"A = The Technical Specification limit on scram time to notch position 36. (Technical Specification Table 3.1.4-1 at notch position 36) tiOLMCPR = the difference between the Option A OLMCPR and the Option B OLMCPR reported in Table 32. Table 32 Cycle OLMCPR Values Transient
: 1. The Turbine Trip with Bypass transient will be used as the Minimum OLMCPR transient for Option B Analysis.
: 2. All the OLMCPR values reported in Table 32 are for two recirculation loop operation.
: 3. For Options A and B, the OLMCPR value for single recirculation loop operation is equal to the OLMCPR value for two recirculation loop operation.
Sample Calculation:
Assume two recirculation loop operation.
If 'tave is 0.820 seconds (scram time test) and -c 8 (as calculated with equation 3) is 0.850 seconds then the criteria from Equation 2 is met and the Option B OLMCPR of 1.62 can be used. If 'tave is 0.950 seconds and -c 8 is 0.850 seconds, then Equation 2 is not met and a new Option B OLMCPR must be calculated using Equation 4 above. The example calculation is as follows: 4 100% Tave -TB ) OLMCPRNEw 
= OLMCPR 0 tionB + tiOLMCPR,OLMCPRTTWBP p TA -TB 
= 1.54 (from Table 32 above.) rave = 0.950 r B = 0.850 r A = 1.080 (Technical Specification Table 3.1.4-1 at notch position 36) 
= 1. 7 4 -1.54 = 0.20 (from Table 32 above; assume two recirculation loop operation)
(0.950-0.850) J ( ) tw
* 1 t' OLMCPRNEw 
= 1.54 +
* 0.20, 1.62 =MAX 1.63, 1.62 = 1.63; o rec1rcu a 1on 1.080-0.850 loop operation.
Note: If single recirculation loop operation Option B OLMCPR value is desired, the same value is used, i.e. 1.63. NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 37 of 50 11.0 Turbine Bypass System Response Time The TURBINE BYPASS SYSTEM RESPONSE TIME shall be that time interval from when the main turbine trip solenoid is activated until 80% of the turbine bypass capacity is established.
The TURBINE BYPASS SYSTEM RESPONSE TIME shall be .S 1.1 seconds. 

==Reference:==

Technical Specification 1.1, Surveillance Requirement 3.7.7.3. 12.0 Shutdown Margin (SDM) Confirmation Technical Specification 3.1.1 requires that the SDM be confirmed for Monticello Cycle 27. Analytical SDM has been confirmed in the Supplemental Reload Licensing Report (Reference 2, Section 4). For any mid-cycle core loading changes, the analytical SDM will be re-confirmed, formally documented, and reviewed prior to start-up.
13.0 APRM Simulated Thermal Power-High Delta W Allowable Value The APRM Simulated Thermal Power-High Flow Biased Scram Setpoint Allowable Value shall be: For Two Loop Operation (TLO): SsrP .S (0.61(W) + 67.2%) where: SsrP = Scram setting in percent of rated thermal power (2004 MWt) W = Loop recirculation flow rate in percent of rated For Single Loop Operation (SLO): (NOTE: SLO is not permitted in the MELLLA+ region.) SsrP .S (0.55(W-,1.W) 
+ 61.5%) where: SsrP = Scram setting in percent of rated thermal power (2004 MWt) W = Loop recirculation flow rate in percent of rated /lW = Difference between two-loop and single-loop effective recirculation flow at the same core flow (llW = 5.4% for single loop operation, /lW = 0.0 for two-loop operation) 

==Reference:==

Technical Specification 5.6.3, item 5, Technical Specification Table 3.3.1.1-1, Function 2.b, footnote (b), and Reference 24 NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 38 of 50 1.10 1.00 0.90 0.80 c:o.70 -0
:!: 0.50 0.40 0.30 0.20 Figure 1 Monticello Cycle 27 Power Dependent MAPLHGR and LHGR Multipliers for MELLLA+ Conditions ............. ..,.,... -.,..,.. I-""" MAPLHGRp = MAPFACp
* MAPLHGR / For 25% > P: No Thermal Limits Required / / if--.
flow For 25% P < 40%, >50% Flow MAPFACp=0.519+0.001533(P-40%) 
"'I' For 25% P < 40%,
Flow >50% Flow MAPFACp=0.638+0.007733(P-40%)
For 40% P 100% MAPFACp=1.0+0.005217(P-100%)
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 POWER {% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 39 of 50 1.1 0.5 Figure 2 Monticello Cycle 27 Flow Dependent MAPLHGR and LHGR Multipliers for MELLLA+ Conditions For F > 99% of RATED: MAPFAC(F) 
= 1.0 For F:::; 99% of RATED<1l:
MAPFAC(F) 
= MINIMUM[0.9908, nF + b] F = CORE FLOW(% of RATED)/1 00 n = 0.680 b = 0.456 0.4 30 40 50 60 70 80 90 100 110 Core Flow (% Rated) <1>1n addition to the power and flow dependent multipliers, Monticello also requires an ECCS MAPLHGR multiplier of 0.9908 for operation at or below 99% core flow. This multiplier ensures that the off-rated limits assumed in the EPU ECCS-LOCA analyses bound the cycle-specific off-rated limits calculated for MELLLA+ operation.
NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 40 of 50 4.0 t/) t/) n:l 3. 5 c. >-.a c.. v c.. ... 0 .... 30 --. c.. c.. () ::!: ....J 0 0 2.5 ;;::: 0 0 -.::t J\1 c.. ... 0 .... 2.0 I ... CJ.) c. E ::J ::!: 0:: c.. t) ::!: 1.5 1.0 20 I I I I I
I I !\Fie i\ I I I I I I I I I I I I *
* I I I ..___( I I I I
I I I I Figure 3 Monticello Cycle 27 Power Dependent K(P) I MCPR(P) Limits for MELLLA+ Conditions Operating Limit MCPR(P) = Kp x Operating Limit MCPR(100)
For P < 25%: No Thermal Limits Monitoring Required w>50% For 25%:5 P < 40%, >50% Flow OLMCPR(P) 
= 2.91 + 0.0473*(40%-P) For 25% :5 P < 40%, :5 50% Flow OLMCPR(P) 
= 2.37 + 0.0307*(40%-P)
For 40% :5 P < 60% Kp = 1.15 + 0.00865*(60%-P) 
' For 60%:5 P < 90% Kp = 1.056 + 0.00313*(90%-P)
For 90%:5 P :5100% Kp = 1.00 + 0.0056*(1 00%-P) "
LMCI-' Ko 30 40 50 60 70 80 90 100 Power (% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 41 of 50 t--t--110 i:L c.. (.) :2: I ;!: .&sect; ...J 0::: c.. (.) :2: ..... c: Q) 'C c: Q) c. Q) c ;: ..Q u. 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 20 " Figure 4 Monticello Cycle 27 Flow Dependent CPR Limits for MELLLA+ Conditions For W(C) (% Rated Core Flow) ;?; 30% MCPR(F) = MAX(1.23, A(F)
* W(C) I 100 + B(F)) Max Flow= 107.0 A(F) = -0.636 B(F) = 1.831 ""' "" " ' "' " 30 40 50 60 70 80 90 100 Core Flow(% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 110 120 Page 42 of 50 Figure 5 Monticello Cycle 27 Power/Flow Map for MELLLA+ Conditions 2250 2000 1750 1500 --3: :!: -1250 a.. Cl) 3: 0 a. 1000 Cl) a.. 0 (.) 750 500 250 0 0 10 20 NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 I I I I I ------------.,----------------
30% Pump I I I I I I I Normal Region Actual Natural Circulation and 30% Pump Speed Lines could differ from that shown. -r--------------
1 I I I I I I I I 30 40 Core Flow (Mib/Hr) Page 43 of 50 1 I I I I I I I I 100% Core Power 100% Core Flow 50 I I I I I
I I ----T-1 I I I I I I I I I ____ ... ___ _ ! I I I ----+------
1 I I I I 2004 MWt 57.6 Mlb/hr 60  
-'*' -L. 0 a.. C1) L. 0 (.) 80% 70% 60% 50% 40% 30% 20% Figure 6 Monticello Cycle 27 Power/Flow Map for MELLLA+ Conditions I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I ------7-------r------;-------r------;-------r------;-------r------;-------r------;-------r------;-------r------;-------r------;-
' I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I .j. I 1 : : : : : : : : : : : : :
MI"'LLLA 1 Bound:p-y
__ _..A I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I : i i : i : i i i : i ME.I-LLAB!mndary: : : I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 
-I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I Circuiation 
!
1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 15 16 17 18 19 I I I I I I I I I I I I I I I I I I I I I I I I I 30% Pump sbeed uhe ! I I I-----:-..
I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 20 21 22 23 24 Ii.Ts MWdlOO% WO RodlLine I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I l I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I : 100% Core Power -----r-------J-100% Core Flow I I 2004 MWt 57.6 Ml.b/hr ! i I I I I I I I I I I I I ! !
I I I I I 25 26 27 28 29 30 31 32 33 34 35 Core Flow (Mib/Hr) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 44 of 50 1.0 0.9 O.B 0.7 Q 1-<l: 0.6 a: >--( 0.5 0 w 0 w a: 0.4 0 u 0.3 0.2 0.1 0.0 0.0 Figure 7 Stability Criterion Map I Stable I 0.2 0.4 0.6 CHANNEL DECAY RATIO NAD-MN-035, Monticello Cycle 27 EPU/MELLlA+
COLR, Revision 0 0.8 1.0 Page 45 of 50 4.0 3.5 0 0 '&#xa2; v a. L.. .E a:-3.0 a. (..) __. 0 25 o* 0 '&#xa2; /\I a. L.. .E I L.. Q) c.. E ::s 0::: a. (..) 1.5 1.0 20 Figure 8 Monticello Cycle 27 Power Dependent K(P) and MCPR(P) Limits for Pressure Regulator Out of Service (PROOS) for MELLLA+ Conditions
* I
* I I I I I
* I . I Operating Limit MCPR Determination I For P < 25%: No Thermal Limits Monitoring Required w>50% OLMCPR(P}, No change from Figure 3 1\ For 25%::; P < 40%, > 50% Flow I 1\ OLMCPR(P) 
= 2.91 + 0.0473*(40%-P)
I For 25% s P < 40%,::; 50% Flow I OLMCPR(P) 
= 2.37 + 0.0307*(40%-P)
I OLMCPR(P} 
= K(P}
* OLMCPR(100}
for PROOS I For 40%::; P < 60% Kp = 1.46 + 0.0045*(60%-P)
I ' For 60% s P ::; 85% Kp = 1.24 + 0.0088*(85%-P)
I OLMCPR(P} 
= K(P}
* OLMCPR(1 00}, No change from Fig. 3 For 85% < P < 90% Kp = 1.056 + 0.00313*(90%-P)
For 90%::; P::; 100% Kp = 1.00 + 0.0056*(1 00%-P) I I I " I I I I Fl<
* I I I I I I * * *
* I I t.-OLMCPR(r-J
* Kp I K I No Change No Change I from Fig. 3 I from Fig. 3 I I I -I I I I I I N I I I I L *
* 30 40 50 60 70 80 90 100 Power(% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 46 of 50 1----1--1----110 1.02 0.98 0.96 (J) 0.94 0 0 n:: c.. 0.92 .... .E :!:::: E 0.9 :.J n:: c.. 0.88 (.) ...J u. :::!!: 0.86 E *;:: .$ 0.84 .E: 0.82 0.8 0.78 0.76 20 I I I
* 1 No change from -Garde! MFLCPR --+ I I I I I I I I I I I I I I I Figure 9 Pressure Regulator Out Of Service Interim MFLCPR Limit for MELLLA+ Conditions I I I _ No change from __.,.. Garde! MFLCPR v: I ' _, I I I I I I I I I I "' / I I I ' v / I I / / For 40%.:: P.:: 60% MFLCPR = 0.78-0.0035 
* (P-60%) I 30 40 50 "' / 60 Power(% Rated) 70 For 60% < P .:: 85% MFLCPR = 0.78 + 0.0032 * (P-60%) I I I I I 80 90 The plot is valid for Option A & B scram times. The limit is not dependent on core flow. 100 NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 47 of 50 1.10 1.00 0.90 0.80 0:0.70 -{)
::2: 0.50 0.40 0.30 0.20 Figure 10 Monticello Cycle 27 Power Dependent MAPLHGR and LHGR Multipliers for Pressure Regulator Out of Service (PROOS) for MELLLA+ Conditions y v ..,.--MAPLHGRp = MAPFACp
* MAPLHGR -----For 25% > P: No Thermal Limits Required lL For 25% P < 40%, > 50% Flow / v ff-50% flow MAPFACp=0.519+0.001533(P-40%)
For 25% P < 40%, 50% Flow "' MAPFACp=0.638+0.007733(P-40%)
I' For 40% P 85% >50% Flow MAP FACp=O .825+0.004000(P-85%)
For 85% < P 100% MAPFACp=1.0+0.007067(P-1 00%) 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 POWER (% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 48 of 50 1.02 1.00 en 0 0.98 0 0:: 0.. ... 0 ;;;; 0.96 E :.:::i I-0.94 0.. <( ::!!: E *;: 0.92 Q) +" s:::: 0.90 0.88 20 I I I IL . No I Change I I I I II
* I I I I
I I * . I I I I I I
* 30 Figure 11 Pressure Regulator Out Of Service Interim MAPRAT Limit for EPU with MELLLA+ Conditions I For 85% < P 100% I MAPRAT = 1.0 + 0.002 x (P -100%) v ______.. y For 40% P 85% MAPRAT = 0.939-0.001 x (P-40%) 40 50 60 70 80 90 100 Power (% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
COLR, Revision 0 Page 49 of 50 1.02 1.00 0.98 0 0::: a.. .... 0 0.96 -:!:::! E :.:::i 0 0.94 a.. ....J u.. E 0.92 *;:: .s 1: 0.90 0.88
* I I II Figure 12 Pressure Regulator Out Of Service Interim MFLPD limit for EPU with MELLLA+ Conditions For 85% < P 100% I MFLPD = 1.0 + 0.002 x (P -100%) / 1+---No ""' I Change I y I I Ill I I For40% P 85% * . MFLPD = 0.939 -0.001 x (P -40%) I I I I I I I " I I
* 20 30 40 50 60 70 80 90 100 Power (% Rated) NAD-MN-035, Monticello Cycle 27 EPU/MELLLA+
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